引擎動力撲翼機之開發

本研究目的在於設計並製作出一台搖控撲翼飛行機構，探討以引擎作為輸出動力的平面式薄膜翼遙控撲翼機之可行性。撲翼飛行器的主要特點是將升力、推進的功能集合於撲翼系統中，由減速齒輪組及四連桿撲翼機構將引擎輸出動力轉換成所需工作轉速及拍撲動作。本研究分析四連桿撲翼機構在同向逆轉時，不同角度位置的速度分析中發現，撲翼上、下拍撲時，因相同轉向而產生的相位差將導致左右兩翼拍撲動作的不對稱，使升力及推力無法完全發揮。本研究採用兩段式反向四連桿減速驅動機構，使兩翼拍撲動作同步，提昇其升力。由實驗結果得知撲翼頻率3Hz的狀態下最大升力約4.5kgf（44N），推力達到約2.5 kgf（24.5N）。在機體的設計過程中，採用工程繪圖軟體以提高配重設計的準確度，提高飛行時的水平安定。

關鍵字

引擎動力；撲翼機

並列摘要

The purpose of this research is to design and make an ornithopter which the source of the power comes from the engine. In order to explore the possibility of RC ornithopter which used engine as its output power. The major characteristic of ornithopter is combining the three functions, lift、thrust、spiral in flapping system. By gear box and 4-bar linkage, the output power of engine could be transferred to working speed and flapping motion which is the working process needed. By analyzing the steering and the relation between angles and speed, we come to the conclusion that while the two wings were flapping, the deviation caused by steering may result in inconsistent flapping of two wings and the lifting force and the thrust force will be out of function. To improve it, we may adapt the solution which included the two phase of roll reversal gear box to increase the consistency of flapping. Therefore, the lifting force may be improved. According to the statistic of the experiment, we could learn that the flapping frequency at the condition of 3Hz, the most lifting force is around 4.25kgf（44N）, and the most thrust force could reach to 2.5kgf（24.5N）. In the design of flying stability, all the designing process of models may work with CAD to increase the accuracy of weight distribution in the designing. For the part for tail, use film airfoil to reduce the stern part’s weight of the plane model, as well to increase the longitudinal stability of plane model.

並列關鍵字

engine power ； ornithopter

參考文獻

[1] 陳冬永 ─固定翼與旋翼搖控複合式教練機的設計

[2] James D. DeLaurier ─

(The Aeronautical Journal, Vol.97 No.946, April 1993)

[3] James D. DeLaurier ─

A Study Of Mechanical Flapping-Wing Flight

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引擎動力撲翼機之開發

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